>From a88d72d2108f92f004a3f050a708d9b7f661f924 Mon Sep 17 00:00:00 2001
From: Hans Petter Selasky <hselasky@xxxxxxx>
Date: Mon, 14 Jan 2013 13:53:21 +0100
Subject: [PATCH] Correctly initialize data for USB request.
Found-by: Jan Beich
Signed-off-by: Hans Petter Selasky <hselasky@xxxxxxx>
---
drivers/input/tablet/wacom.h | 1 +
drivers/input/tablet/wacom_sys.c | 8 +++++---
2 files changed, 6 insertions(+), 3 deletions(-)
diff --git a/drivers/input/tablet/wacom.h b/drivers/input/tablet/wacom.h
index b79d451..d6fad87 100644
--- a/drivers/input/tablet/wacom.h
+++ b/drivers/input/tablet/wacom.h
@@ -89,6 +89,7 @@
#include <linux/init.h>
#include <linux/usb/input.h>
#include <linux/power_supply.h>
+#include <linux/string.h>
#include <asm/unaligned.h>
/*
diff --git a/drivers/input/tablet/wacom_sys.c b/drivers/input/tablet/wacom_sys.c
index f92d34f..23bc71e 100644
--- a/drivers/input/tablet/wacom_sys.c
+++ b/drivers/input/tablet/wacom_sys.c
@@ -553,10 +553,12 @@ static int wacom_set_device_mode(struct usb_interface *intf, int report_id, int
if (!rep_data)
return error;
- rep_data[0] = report_id;
- rep_data[1] = mode;
-
do {
+ memset(rep_data, 0, length);
+
+ rep_data[0] = report_id;
+ rep_data[1] = mode;
+
error = wacom_set_report(intf, WAC_HID_FEATURE_REPORT,
report_id, rep_data, length, 1);
if (error >= 0)
--
1.7.11.4
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